Answer:
In one family, the mother has type A blood and the father has type B blood, and they have two biological children. Their son has type AB blood, and their daughter has type O blood. Their daughter's type O blood indicates that both parents are carriers of the ABO blood group alleles. The son can donate blood to anyone with type A, B, AB, or O blood, because type AB blood is a "universal recipient" that can receive any blood type. The daughter can donate blood to anyone with type O blood, because type O blood is a "universal donor" that can be given to any blood type. This is because type O blood lacks the A and B antigens that are present in other blood types, so it is compatible with all blood types.
Step-by-step explanation: